It's a silly however, did you receive a pet from Hunter Trainer Quest? Hunter is among the classes that is easy to level, probably THE easiest of WOW TBC Gold you are completely new to the game which is because you've got pets that are subject to punishment from every mob but not your personal character. If you've got a pet, then maybe your pet isn't able to take the heat? Remember that when your pet is in the tank and you don't have the luxury of going to the max and hit every button to kill the mob, that will make your pet overaggressive for sure. There's a certain tempo to killing mobs solo that you have to experience it. It may seem slow, but that's just how the game is designed and you won't be able to do anything fast in WoW unless you utilize certain tricks like dungeon boosters, which I wouldn't recommend for someone who is completely new.
Another comment I made was that I would not recommend this to anyone unless they are experienced players who can immerse themselves into RPG's and not be rushed to get to the cap. This doesn't sound like one of cheap Burning Crusade Classic Gold them and I suggest you take a look at Questie. I'm sure there'll be a tutorial on YouTube that will show you how to set it up.